Combination drawing instrument.



P. NEUKIRGHEN. y GOMBINATIN DRAWING INSTRUMENT.

APPLIOATION FILED 11u28, 1913A 1,()99,56'7, Patented June 9, 1914l PETER NEUKIRCHEN, 0F CHICAGO, ILLINOIS.

COMBINATION DRAWING INSTRUMENT.

Specification of Letters Patent.

Application filed May 28, 1913.

Patented June 9, 1914.

serial no. 770,396.

To all @07mm t may concern Be it known that l, PETER NnUKIRcHnN, a citizen of the United States, and a resident of Chicago, county of Cook, and State of Illinois, have invented certain new and useful improvements in Combination Drawing instruments, of which the following is declared to be a full, clear, and exact description.

This invention relates to combination drawing instruments, and is designed to provide a handy and useful instrument that be employed for many purposes, and so arranged that it may occupy but very little space in the pocket of the user.

in its present form, the invention has been designed for use as a twelve inch rule, a. right angle triangle, a T square, a pair of Compasses, a gage, a pencil and a knife, and all of the movable parts are so arranged that when not in use they may be inclosed within the handle which forms part of the various instruments enumerated.

The invention consists in the several novel features of construction, arrangement and combination of parts hereinafter fully set forth and claimed.

The invention is clearly illustrated in the drawing furnished herewith, of which- Figure 1, is a perspective view of the drawing instrument folded up; Fig. 2, is a side view thereof showing, in solid lines, the instrument extended for use as a right angle triangle, and showing in dotted lines, the position occupied by it when used as a T square and as a rule; Fig. 3, is a side elevation of the instrument, looking at the side opposite to that seen in Fig. 2, and showing the instrument in position for use as a pair of Compasses, gage; Fig. 4t, is a detail edge view of a certain pencil and knife holder, forming part of the instrument; Fig. 5, is a detail, cross section taken on the line 5 5 of Fig. 2, but showing the instrument folded up; Fig. 6, is a detail, cross section taken on the line 6-6 of Fig. 3; Fig. 7, is a detail section taken on the line 7-7 of Fig. 3; Fig. 8 is a detail, longitudinal section taken on the line 8 8 of Fig. 2, and Fig. 9, is a perspective view of a fragment of a modified form of handle.

Referrino' to said drawing, 1G, designates the handle or container in which the remain ing portions of the instrument are secured. Said handle is preferably7 made of sheet metal folded up, as seen in Figs. 1 and G, to provide a closed compartment 11, and an open sided compartment 12. This construction is formed by folding up from one side 13, two parallel sides 1a, 15, folding over from the side 15,' a part 16, parallel with the part 13, and o-ne half as wide, and fold* ing down the part 1G, to form a central or intermediate wall or partition 17.

rlhe side 14, and partition 17, are slotted longitudinally, as at 1451, 17a, the slots eX- tending from a point near one end of the handle to a point midway between its ends, and projecting through said slots is a screw 1S, having a head 19, bearing against one face of the partition 17, and a set nut 20, threaded on its outer end and bearing against the side 14;. lPivotally mounted on said screw 18, is one section 2l, of a foldable rule, and between said section 21, and the partition 17, is a sleeve 22, which spaces the partition 17, and side 141e, apart at that point, so that the nut 20, may be screwed down to clamp the rule section 21, in place at any desired angle with respect to the handle. To the free ond of the rule section 2.1, as at Q11, is pivoted a second foldable rule section 23, and to the free end of said section 23, as at 25, is pivoted a second rule section 26; said sections 21, 23, 2G, being so proportioned that they may be folded together side by side, and all three may be folded down into the open sided compartment 12, of the handle. Preferably, the rule sections are' provided with registering struck up portions 27, 28, near their pivot points, which struck up portions engage each other whenever the rule sections are brought into alinement with each other, and act to hold the rule sections in such alinement, except when force enough is applied to move the struck up portions out of engagement with each other. Anotch 29. is formed on one edge of the end rule section 26, near its end, and the side 13, of the handle, is notched to receive said rule section 26, with the notched portion 29, engaging the notched side 13, and this is done whenever it is desired to employ the instrument as a right angle triangle, as seen in full lines in Fig. 2, the rule section 21, at such times extending at right angles to the handle 10, and being held in place by the screw 18, and nut 20, while the sections 23, 26, extend at an angle of forty-.tive degrees between the other end of the rule section 21,

and the free end of the handle 10, the notched portion 29, of the rule section 26, engaging the side 13 of the handle.

Upon the pivot pin 24, of the rule section 23, is pivotally secured a pointed member 30, which may be used as one point of a divider or a pair of Compasses, as seen in Fig. 3. Said pointed member lies in the same plane as the rule section 26, and the free end of the latter is cut away, as at 26, to reccive the pointed member 30, whenever it is folded back upon the rule section 23. Said pointed member' 30, is formed at one end with notched portions 31, 32, to form shoulders adapted for engagementwith the terminal end of the rule section 26, as seen in Fig. 3, the arrangement being such that when the terminal end of the rule section 26, enters the notched portion 31, of the pointed member 30, and engages the shoulder` thereof, it acts to hold said pointed member 30, in its extended position, and whenever said pointed member is swung into the position shown in dotted lines in Fig. 3, then said terminal end of the rule'section 26, enters the notch 32 and holds the pointed member in that posit-ion.

Slidably mounted in the closed compartment 11, is a combined pencil and knife holder 33, which contains a pencil 34, at one end, and a knife blade 35, at the opposite end. A knob 36, formed on the end of a stem 3?, secured to the combined pencil and knife holder, forms means whereby the latter may be moved back and forth in the compartment 11, to bring either pencil or knife into operative position beyond the ends of the handle. The stem 37, extends through a longitudinally extending slot 38, formed in the side15 of the handle, and

1 preferably the pencil and knife holder is formed with two round projections 39, 40, on one side that are adapted to enterl holes 41, 42, in the side 15, of the handle, and thereby hold the pencil and knife holder in either of its extended positions.

The rule section 21, is formed with a hole 43, near its pivot on the handle, which hole is adapted to receive the head of the pivot pin 25, whenever the device is used as a pair of Compasses (see Figs. 3 and 7). This arrangement prevents relative movement between the foldable rule sections whenever into engagement with the notched end of the handle, the instrument may be used as a right angle triangle. To use the instrument as a T square, the rule sections 21, 23, 26, are brought into alinement with each other, the nut 20, partly unscrewed, and the nut 20 and screw 1S, moved over along the handle until the screw 18, reaches the ends of the slots 14, 17H, at the middle of the handle; by extending the foldable sections 21, 23, 26, at right angles to the handle portion 10, and tightening up the nut 20, the device may then be conveniently used as a T square. By changing the angular relation between the foldable sections vand the handle portion 10, parallel oblique lines may be drawn with the device. To use the device as a pair of Compasses, the rule section 26, is folded back on the section 23, both sections folded back on the section 21, until the head of the pivot pin 25, enters the hole 43, the pointed member is then turned on its pivot until it is in fully extended posit-ion, as shown in Fig. 3. The knob 36, is then pushed downward to bring the pencil 34, into operative position, at which time the round projection 40, on the holder 33, enters the hole 42, in the side 15, of the handle, and holds the pencil in extended position. To use the device as a gage, the pointed member 30 is swung into the position indicated in dotted lines in Fig. 3. The angular relation between the two legs of the compasses may, of course, be changed, and may maintained by screwing up the nut 20. lf it is desired to use the device as a pencil or knife, the foldable sections of the rule are swung into the open sided compartment 12, and the pencil and knife holder moved in the proper direction to bring that instrument into operative position, which it is desired to use.

In Fig. 9, a fragment of the handle 10a, is shown as modiiied to form two closed compartments 11b, one on either side of a centrally located open compartment 12b; each vclosed compartment is separated from the open compartment by a partition 17h, 1T". It is to be understood that this shape of handle is to be constructed with the features and contrivances illustrated in the other figures, and that the view is simply for the purpose of showing a modified cross section of the handle.

More `or less variation of the exact details of construction is possible without departing from the spirit of this invention, and I do not, therefore, desire to limit myself to the lexact construction shown and described, ex-

cept as may be necessitated by the prior state of the art.

I claim as new and desire to secure by Letters Patent:

1. A combination drawing instrument, comprising a hand-le having a closed toolreceiving compartment and an open sided compartment, jointed rule sections adapted to be received within said open sided compartment, one of said sections being pivotally secured to said handle and having a limited amount of movement longitudinally of said handle.

2. A combination drawing instrument, comprising a handle having a closed compartment and an open sided compartment having longitudinally extending slots in its sides, said closed compartment being adapted for the reception of a combined pencil and knife holder, jointed rule sections adapted to be received within said open sided compartment, a screw connecting one of said jointed rule sections with said handle, and movable in said longitudinally extending slots therein, and a set nut threaded upon said screw for clamping the rule sections in place.

3. A combination drawing instrument, comprising a sheet metal handle bent up to form a closed compartment, and an open sided compartment having longitudinally eX- tending slots in its sides, said closed compartment being adapted for the reception of a4 slidable pencil and knife holder, jointed rule sections adapted to be received in said open sided compartment, a screw connecting one of said rule sect-ions with said handle and slidably mounted in said slots in said handle, and anut on said screw.

Li. In a combination drawing instrument, a handle having an open sided compartment, oldable rule sections adapted to be received in said compartment, one of said rule sections being pivotally secured to said handle near one end, and `another of said rule sections being formed with a notch in its edge adapted tor engagement with the other end of said handle, substantially as and for the purpose set forth.

5. In a combination drawing instrument, an open sided handle, jointed rule Sections, one of which is pivotally connected with said handle, .a pointed member pivotally mounted on one of said rule sections and adapted to be extended, said pointed member having notched portions forming shoulders, and the end rule section having a cutaway portion for receiving said pointed member when folded back upon the rule section, and arranged to engage either of said shoulders to hold said pointed member in operative position.

6. In a combination drawing instrument, a handle having an open sided compartment, three jointed rule sections, adapt-ed to be received in said open sided compartment, one of said rule sections being pivotally connected to said handle, and having means for holding the other rule sections at its sides,

`and a pointed member pivotally mounted upon one of said rule sections near one end, said pointed member having a notched portion adapted for engagement with the terminal end of one of the rule sections whereby it may be held in extended position.

7. In a combination drawing instrument, a handle consisting of a piece of sheet metal folded up to provide one compartment closed on its sides, and a second, longitudinally slotted compartment open on one side, both of said compartments being open at their ends, in combination with an instrument holder slidably secured in the iirst 1nen tioned compartment of the handle, and a rule having a pivot pin, movable in the slot ot the second mentioned compartment.

8. In an instrument of the character described, a handle consisting of a piece of sheet metal folded up to provide a longitudinally extending compartment, closed on all sides and open at its ends and lying at one side oi2 the median line of the handle, and an open sided longitudinally extending compartment on the other side oi said median line.

In testimony whereof I have hereunto set my hand this 26th day of May A. D. 1913, at Chicago, Cook county, Illinois.

PETER NEUKIRCI-IEN.

-Witnesses CHARLES O. SHERVEY, NELs J. IwIoLTER.

Copies of this patent may be obtained for tive cents each, by addressing the Commissioner of Patents, Washington, ID. C. 

